Выберите время:
<select name="hours"  id="hours">
  <option selected value="на текущее">
  <option value="10">10 часов</option>
  <option value="11">11 часов</option>
  </select>
<select name="min" id="min" size="1">
<option value="-1" selected="selected">на текущее</option>
<option value="1">1 минута</option>
<option value="2">2 минуты</option>
<option value="3">3 минуты</option>
<option value="4">4 минут</option>
</select>

if (Tools::isSubmit('vremya') AND !empty($_POST['vremya']))
        {
            if (!Validate::isMessage($_POST['vremya']))
                $errors[] = Tools::displayError('invalid vremya');
            elseif ($oldvremya = vremyae::getvremyaByCartId(intval($cart->id)))
            {
                $vremya = new vremya(intval($oldvremya['id_vremya']));
                $vremya->vremyae = htmlentities($_POST['vremya'], ENT_COMPAT, 'UTF-8');
                $vremya->update();
            }
            else
            {
                $vremya = new vremya();
                $vremya->message = htmlentities($_POST['vremya'], ENT_COMPAT, 'UTF-8');
                $vremya->id_cart = intval($cart->id);
                $vremya->id_customer = intval($cart->id_customer);
                $vremya->add();
            }
}